<form role="form" name="add_form" method="post" action="/admin/article/add" onSubmit="return add();">
     <input type="text" name="title" class="form-control" placeholder="标题" value="" autofocus>
     <input type="text" name="tags" class="form-control" placeholder="标签，多个标签请用空格分割">
     <textarea id ="content" name="content" class="form-control" rows="20"></textarea>
     <button type="submit" class="btn btn-success">发表</button>
</form>
